CN106129509B - A kind of integrated battery of charging-discharging controller - Google Patents
A kind of integrated battery of charging-discharging controller Download PDFInfo
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- CN106129509B CN106129509B CN201610496158.1A CN201610496158A CN106129509B CN 106129509 B CN106129509 B CN 106129509B CN 201610496158 A CN201610496158 A CN 201610496158A CN 106129509 B CN106129509 B CN 106129509B
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- charging
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- 238000007599 discharging Methods 0.000 title claims abstract description 24
- 238000007600 charging Methods 0.000 claims abstract description 50
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 230000001360 synchronised Effects 0.000 claims description 20
- 230000000295 complement Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 238000000034 methods Methods 0.000 claims description 9
- 238000010521 absorption reactions Methods 0.000 claims description 2
- 238000010277 constant-current charging Methods 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims description 2
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 230000001131 transforming Effects 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000010278 pulse charging Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 210000001367 Arteries Anatomy 0.000 description 2
- 210000003462 Veins Anatomy 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 239000000203 mixtures Substances 0.000 description 2
- 280000063503 Clamper companies 0.000 description 1
- 230000001276 controlling effects Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000994 depressed Effects 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Description
Technical field
The present invention relates to charging-discharging controllers to integrate battery.
Background technique
Currently, no matter for any kind of battery, when practical application, need to be controlled its charging by charging-discharging controller And discharge condition.Concrete scheme is all to be carried out according to the battery of load selection variety classes and specification in series and parallel, further according to battery Concrete condition design its corresponding charging-discharging controller.No matter these controllers use what control algolithm, general needle Battery is integrally controlled, and it is battery balanced, prevent the considerations of the problems such as super-charge super-discharge at most refine to every piece it is packaged Battery.And battery and controller are mutually indepedent, the two are not regarded as an entirety and accounted for.
Battery and the mutually independent defect of its charging-discharging controller mainly have following three points:
For whole system, the type specification of battery is various currently on the market, this just makes setting for charging-discharging controller Meter needs to change as the case may be.Bad fast, good to the battery maintenance effect control of the low controller battery of use cost Device (BMS) poor compatibility at high cost, is only applicable to the battery of particular types and specification, has change in demand of the system to battery capacity Otherwise designed controller is just needed when change.And battery is separately designed inevitably that result in whole system too fat to move with controller Numerous and jumbled, stability is low, vulnerable to the influence of change of external conditions, while also bringing inconvenience to using.
For battery itself, the battery of monolith encapsulation is all by several small batteries with same size currently on the market What unit was connected in series, monolith battery is exactly a black box for peripheral control unit, and the state of internal each unit is not It can monitor also just uncontrollable.It, can the effect of relatively good control algolithm in the case where each cell cases cannot be taken into account It has a greatly reduced quality, terminates in advance service life so as to cause battery, practical is to improve cost in the long run.
For customer-side, many people can use accordingly due to lacking and conserve knowledge and cannot to play battery complete Performance.It is also contemplated that the problem of controlling after buying battery, time-consuming and laborious, economically unfriendly, effect is also not necessarily secure, It does not control or also has potential danger in the case that control effect is bad.
Summary of the invention
The purpose of the present invention is to propose to a kind of novel integrated electric power storages for being integrally formed charging-discharging controller and accumulators collection Pond, controller can carry out accurate charge and discharge control to each battery unit, it uses the positive and negative arteries and veins of high current of variable pulse width Punching charging, can be according to its charging of the Characteristics Control of battery itself to improve the charge acceptance of battery and shorten the charging time Electric current, voltage with electric discharge, charge or discharge cut-off may also display or communicatively output temperature and state (voltage, electricity Stream, state-of-charge etc.), can plug and play, it is not only easy to use, save space, and guarantee minimum unit battery also most Charge and discharge are carried out under excellent state, are remarkably improved service efficiency and the service life of battery.Integrated battery in practical applications without Need other operate or equipment can running of pumps in series parallel connection to meet system voltage and power requirement.
The technical scheme adopted by the invention is that:
A kind of integrated battery of charging-discharging controller, including accumulator body, power main circuit, detection circuit, control electricity Road and display portion, power main circuit with the high-frequency isolation type DC-DC circuit of multiple-channel output, based on two-way circuit of reversed excitation with Some switch combinations form, and switching frequency uses high frequency, and detection circuit mainly includes voltage Ui, the electric current to transformer primary side Ii, the cell voltage Ub1-Ub6 and battery temperature T of every road output are sampled, and control circuit is with the letter of receiving test circuit It number is handled and each switching tube is driven to open and turn off, in use, charge and discharge can carry out simultaneously, and use is positive and negative Pulse is charged, and determines charging and discharging state using primary side current of transformer and secondary voltage, and carry out temperature benefit in charging It repays.
Further, every road the output voltage 2V or 3V or so of power main circuit multiple-channel output, synchronous commutation type MOSFET is replaced For diode.
Further, it is charged using positive negative pulse stuffing.Early period battery charge acceptance it is higher when, using high current perseverance Current charge when preset charging voltage to be achieved, is converted to positive negative pulse stuffing charging, specific method be in each charge cycle, Immediately following one or more heavy-current discharge negative pulses after the positive pulse that charges, later followed by one section of intermittent time, battery charging is eliminated The polarity effect generated in the process, raises charge acceptance, to guarantee the possibility of next period large current charge.
Further, when positive pulse charges, transformer primary side power supply power supply, main switch conducting complementary with synchronous rectifier, Load negative pulse or when being discharged, energy of the transformer primary side load absorption from secondary side battery, main switch with it is synchronous whole The still complementary conducting of flow tube.
Further, it carries out during the charging process battery balanced twice.Specific method is, at the end of constant-current charging phase, Stop charging, detection compares each road cell voltage, determines the carrying capacity on each road；Start intermittent discharge later, it is anti-when charging at this time The synchronous rectification MOSFET of excitation circuit becomes primary side switch pipe, and original primary side switch pipe becomes synchronous rectifier；According to every road Specific carrying capacity determines the duty ratio of each way switch pipe (carrying capacity is excessive then using big space rate, so that carrying capacity will be reduced) Or the too low switching tube of carrying capacity is directly turned off, until carrying capacity is balanced when interval.The high current positive negative pulse stuffing charging stage terminates The positive negative pulse stuffing for applying fixed narrow spaces to battery afterwards carries out floating charging, and in floating charge interval, it is true to compare each road cell voltage for detection Determine carrying capacity and use equalization methods progress identical with constant-current phase is balanced, until charging terminates.
Further, it equally carries out during discharge battery balanced.Specific method is to pass through each road battery electricity of constant testing Pressure when such as the difference of each road voltage is more than balanced allowance, cuts down the duty of too small branch switch pipe to determine whether each road is balanced Than or the direct too low switching tube of shutdown carrying capacity, while increasing the duty ratio of other way switch pipes to supply the function being cut in Rate can make battery externally keep output constant during equalization discharge, to not influence user in this way until equilibrium terminates Use.
Charging-discharging controller of the present invention integrates battery, using variable pulse width large current pulse charging, improves the effect of battery Rate and service life, and the charging time is shortened relative to traditional charging modes；It is integrated to save space, also eliminate user The various many and diverse items that should be noted when using battery, all problems are all settled a dispute by the parties concerned themselves in integrated internal storage battery, are not required to Want manual operation；In addition, synchronous rectifier improves system effectiveness, user is without otherwise designed charge-discharge control circuit, section The time has been saved while energy.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Attached drawing 1 is that charging-discharging controller integrates accumulator structure figure.
Attached drawing 2 is the whole topology of pulse charger
Attached drawing 3 is variable pulse width pulse charge schematic diagram
Attached drawing 4 is charging-discharging controller system program flow chart
Attached drawing 5 is positive pulse charging current simulation result (SOC:20%, 50%, 80%)
Attached drawing 6 is positive negative pulse charging current simulations result
Attached drawing 7 is battery balanced simulation result
Attached drawing 8 is active clamp simulation result
Specific embodiment
The present invention will be further described below in conjunction with the embodiments.
Embodiment 1
A kind of integrated battery of charging-discharging controller, including accumulator body, power main circuit, detection circuit, control electricity Road and display portion, power main circuit with the high-frequency isolation type DC-DC circuit of multiple-channel output, based on two-way circuit of reversed excitation with Some switch combinations form, and switching frequency uses high frequency, and detection circuit mainly includes voltage Ui, the electric current to transformer primary side Ii, the cell voltage Ub1-Ub6 and battery temperature T of every road output are sampled, and control circuit is with the letter of receiving test circuit It number is handled and each switching tube is driven to open and turn off, in use, charge and discharge can carry out simultaneously, and use is positive and negative Pulse is charged, and determines charging and discharging state using primary side current of transformer and secondary voltage, and carry out temperature benefit in charging It repays.
Power main circuit is opened based on two-way circuit of reversed excitation with some with the high-frequency isolation type DC-DC circuit of multiple-channel output The reason of pass is composed, and the use of flyback is main circuit is that its circuit structure is very simple, small in size, low in cost, performance is good Good and high reliablity, is especially advantageous for integrated, and the characteristics of it is capable of providing Multiple isolated outputs just may be implemented to each electricity The accurate control of pool unit.Meanwhile switching frequency uses high frequency to further decrease the volume of transformer.
Since every road output voltage of multiple-channel output is very low (2V or 3V or so), the conduction voltage drop of general-purpose diode is 0.7V, the smallest Schottky diode of conduction voltage drop also have 0.3V, and such as using diode rectification, there will be a large amount of power losses to exist On diode, therefore diode is substituted using synchronous commutation type MOSFET, conducting drain-source resistance maximum is only a few milliohms, big Also there was only minimum loss under charging current.At the same time, synchronous rectification MOSFET can also by control the conducting on each road with Shutdown is battery balanced between a battery unit to realize.In order to recycle, transformer leakage inductance energy improves controller efficiency, clamper becomes Depressor primary side switch pipe turn off when impulse voltage and realize that no-voltage is open-minded, while also be integrated consideration, reduce radiating surface Product is to reduce volume, using complementary type active clamp technology.
Further, every road the output voltage 2V or 3V or so of power main circuit multiple-channel output, synchronous commutation type MOSFET is replaced For diode.
Further, when positive pulse charges, transformer primary side power supply power supply, main switch conducting complementary with synchronous rectifier, Start when the difference in voltage for detecting every road battery is more than balanced allowance battery balanced, specific method is in specific electrical voltage point Synchronous rectifier is disconnected, restores conducting complementary with main switch again after when each branch voltage reaches preset value, loads negative arteries and veins When rushing or being discharged, transformer primary side is that load RL absorbs the energy from secondary side battery, main switch and synchronous rectifier Still complementary conducting, equally starts battery balanced, specific method when the difference in voltage for detecting every road battery is more than balanced allowance It is the duty ratio for cutting down too small branch rectifying tube, restores conducting complementary with main switch again after each branch carrying capacity is balanced.
The charging-discharging controller integrates the control that battery is accurately charged in the pulse of different state-of-charges Journey is as follows:
1) Ui, Ub1-Ub6, Ii and T are sampled after system initialization, and acquires the average value Ub of Ub1-Ub6, it is minimum Value Umin；If Ub is lower than the discharge cut-off voltage Ub.c of battery, discharge control switch S7, S8 are turned off, carries out over；
2) to judge whether each cell voltage is greater than with the difference of Umin if battery average voltage is greater than blanking voltage balanced Voltage, if more than road synchronous rectifier Sn is then turned off, to carry out battery balanced management, otherwise the road is in charged state, Synchronous rectifier conducting complementary with main switch；
3) during the charging process, if cell voltage Ub is less than preset voltage value Ub.set, constant current is carried out with high current and is filled Electricity carries out floating charging if Ub is greater than float charge voltage Uf with the burst pulse of fixed pulse width, if Ub is in Ub.set and float charge voltage Between Uf, then pulsewidth is calculated according to formula:
With the increase of battery charge amount, circuit is given with carrying out variable pulse width charging to battery to narrow current impulse by wide Battery applies the time of having a rest to suit the requirements, to improve charging by than improving charging by electric current, can break exponential curve certainly So receive the limitation of characteristic, realize quick charge and eliminate battery polarization effect, extends battery life；
4) while generating the charging pulse of needs under the conditions of different cell voltages, consider the influence of battery temperature, it is right The battery temperature T sampled carries out temperature-compensating；
5) since battery can show different external characteristics in the different charging stages with the difference of its carrying capacity, common The effect of PI closed-loop control is very unsatisfactory, therefore uses fuzzy self-tuning PID, and during on-line operation, control system is logical It crosses the result treatment to fuzzy logic ordination, table look-up and operation, complete the self-tuing on line to pid parameter, to realize to not Pulse with state-of-charge carries out accurate charge control.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on should be included in protection of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610496158.1A CN106129509B (en) | 2016-06-28 | 2016-06-28 | A kind of integrated battery of charging-discharging controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610496158.1A CN106129509B (en) | 2016-06-28 | 2016-06-28 | A kind of integrated battery of charging-discharging controller |
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| CN106129509A CN106129509A (en) | 2016-11-16 |
| CN106129509B true CN106129509B (en) | 2019-07-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106785142B (en) * | 2016-12-29 | 2019-05-14 | 重庆域垣汽车设计有限公司 | A kind of battery of electric vehicle fast charge method and device |
| CN108417917B (en) * | 2018-01-10 | 2020-07-24 | 中山大学 | Quick charging method for lithium ion battery |
| CN108448186A (en) * | 2018-01-30 | 2018-08-24 | 安徽省金屹电源科技有限公司 | A kind of base station battery manager control panel |
| RU2696018C1 (en) * | 2018-12-14 | 2019-07-30 | Константин Иванович Тюхтин | Method for recovery of accumulator battery |
| CN109802191A (en) * | 2019-02-27 | 2019-05-24 | 苏州浪潮智能科技有限公司 | A kind of charging method, system, device and the server of battery group |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1662632A1 (en) * | 2004-11-29 | 2006-05-31 | Samsung SDI Co., Ltd. | Protective circuit of battery pack |
| CN101557105A (en) * | 2009-05-19 | 2009-10-14 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| CN201466746U (en) * | 2009-01-14 | 2010-05-12 | 常州麦科卡电动车辆科技有限公司 | Balance charger |
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN102684269A (en) * | 2012-05-28 | 2012-09-19 | 河南速达电动汽车科技有限公司 | Intelligent control system of nano lead-acid storage battery |
| CN104753146A (en) * | 2015-04-22 | 2015-07-01 | 青岛大学 | Energy feed type variable-constant-current and positive-negative-pulse fast charging device and method |
| CN105027379A (en) * | 2013-03-04 | 2015-11-04 | 株式会社东芝 | Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100943594B1 (en) * | 2006-03-27 | 2010-02-24 | 삼성에스디아이 주식회사 | Single unit protection circuit module and battery pack using it |
| CN101882699B (en) * | 2010-06-28 | 2012-12-05 | 惠州市亿能电子有限公司 | Charge and discharge balancing control method for power battery pack |
-
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- 2016-06-28 CN CN201610496158.1A patent/CN106129509B/en active IP Right Grant
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1662632A1 (en) * | 2004-11-29 | 2006-05-31 | Samsung SDI Co., Ltd. | Protective circuit of battery pack |
| CN201466746U (en) * | 2009-01-14 | 2010-05-12 | 常州麦科卡电动车辆科技有限公司 | Balance charger |
| CN101557105A (en) * | 2009-05-19 | 2009-10-14 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN102684269A (en) * | 2012-05-28 | 2012-09-19 | 河南速达电动汽车科技有限公司 | Intelligent control system of nano lead-acid storage battery |
| CN105027379A (en) * | 2013-03-04 | 2015-11-04 | 株式会社东芝 | Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power |
| CN104753146A (en) * | 2015-04-22 | 2015-07-01 | 青岛大学 | Energy feed type variable-constant-current and positive-negative-pulse fast charging device and method |
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